Detection device and detection method for multiple gas components and concentrations
A detection device and multi-gas technology, applied in measurement devices, analytical materials, material excitation analysis, etc., can solve the problems of low detection sensitivity, poor reliability, and limited use environment of detection devices, and achieve high detection sensitivity and reliability. , the effect of reliable detection
Active Publication Date: 2022-05-13
NORTHWEST INST OF NUCLEAR TECH
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[0006] Aiming at the technical problems of the existing multi-gas component detection technology, such as low detection sensitivity, poor reliability and limited use environment of the detection device, the present invention provides a multi-gas component and concentration detection device and detection method. The technical scheme is as follows:
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[0045] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that: the accompanying drawings are in simplified form and use inaccurate proportions, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0046] Such as figure 1 As shown, a detection device for multiple gas components and concentrations includes a light source subsystem 101, a probe subsystem 201 and a signal sensing subsystem 301, wherein the light source subsystem 101 and the signal sensing subsystem 301 form a "host" module, and the probe The subsystem 201 constitutes a "probe" module. The light source subsystem 101 and the probe subsystem 201 are connected through the excitation light transmission fiber 3. The excitation light transmission fiber 3 is a multimode fiber with a core diameter of 62.5 / 125 μm, which can transmit 20m. The p...
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Abstract
The invention relates to a multi-gas component and concentration detection device and a detection method, and mainly solves the technical problems of single detection component, poor reliability, limited use environment and the like of the existing gas component and concentration detection device. The detection device is divided into three subsystems, namely a light source subsystem, a probe subsystem and a signal sensing subsystem, according to'host-probe 'modularization separation, the probe subsystem only needs to be placed in an environment to be detected during actual use, and the light source subsystem and the signal sensing subsystem can be far away from a severe environment; in-situ measurement is ensured, and meanwhile, the influence of severe environments such as impact vibration and the like on precise core components is effectively avoided. The probe subsystem realizes multiplexing of excitation light by matching with an excitation light collimation aggregator, an excitation light coupler, a relay optical fiber and the like, so that characterization signals of to-be-detected gas are greatly improved, and high-sensitivity detection of gas components and concentration in severe environments such as impact vibration and the like is realized.
Description
technical field [0001] The invention relates to the detection technology of gas components, in particular to a detection device and a detection method for multiple gas components and concentrations. Background technique [0002] Gas composition and concentration are important indicators of environmental conditions, and are of great significance for understanding the changing process of the environment, especially for the detection of gas composition and concentration in harsh environments such as explosions and engine plumes. The Raman scattering method is a commonly used method for measuring gas components and their concentrations. When the laser irradiates gas molecules, the photons collide with the gas molecules inelastically, resulting in an energy exchange between the photons and the gas molecules, thereby generating Scattered photons with different energies are represented by Raman scattering, and those with increased energy are called anti-Stokes Raman scattering, and...
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IPC IPC(8): G01N21/65
CPCG01N21/658Y02A50/20
Inventor 吴振杰张振荣王晟叶景峰陶蒙蒙王科
Owner NORTHWEST INST OF NUCLEAR TECH